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Official data from INPI

ELETROLISADOR DO TIPO FILTRO-PRENSA PARA ELETRÓLISE DE CLORETO DE SÓDIO

PublicadaInvention Patent

Application data

Number

PI8703493

Type

Invention Patent

Filing

07/08/1987

Publication

03/22/1988

Progress at the INPI

  1. Filing07/08/87
  2. Publication03/22/88
  3. Examination10/16/90
  4. Allowance03/07/95
  5. Grant09/26/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Solvay & Cie

BE

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Inventors

E. C. (pessoa física)

BE

J. D. (pessoa física)

BE

Technical data

IPC Classification

Priority claims

FR

86.10143 · 07/09/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/22/1988

RPI 909

Pedido de patente depositado

#2.1

09/01/1987

RPI 880

Carta-patente expirada

#21.1

Patente extinta em 08/07/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/26/1995

RPI 1295

Deferimento

#9.1

03/07/1995

RPI 1266

Exigência - art. 36 da LPI

#6.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

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